Analysis of switching transient and fault detection of strong power system using PLL

  Rajkumar Nagar,  D.K.Yadav

In power system to discriminate faults from switching transients a new method is proposed in this paper. In this method before the occurrence of first peak of the fault current, fast fault detection and fast fault clearing are essentially required for stable power system. An Example of this system is in an industrial system where bulk power is desired but there high short-circuit currents cannot be measured. Here we are proposing the method of Phase-Locked Loop (PLL) to perform the task of discrimination of Faults and transients. The power system model is developed and simulated for fault performance analysis. MATALB simulations have been performed and the output of the PLL is found completely different for a fault, as compared to a Switching Transient. This difference is being used in this work for discrimination between a fault and a Switching Transient. This capability of discrimination is useful for the safety and stability of the power system.

Keywords- Fault protection, phase-locked loop (PLL), power system, transients, fault current limiter.

Unique Identification Number - IJEDR1502049
Page Number(s) - 260-268
Pubished in - Volume 3 | Issue 2 | May 2015
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)

  Rajkumar Nagar,  D.K.Yadav,   "Analysis of switching transient and fault detection of strong power system using PLL", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.3, Issue 2, pp.260-268, May 2015, Available at :http://www.ijedr.org/papers/IJEDR1502049.pdf